I just spent some time studying my 3-window cab, 5-window cab and my 5-window cab back trying to think through what this would really look like if I started cutting.

First thing I see is that my cab back which is from a '47 has some panels my '49 5-window cab does not. Using the '47 will mean some cuts that are not described here. Oh well...

I can see that planning the overlap approach around the corner windows probably simplifies things some. Rather than butt-welding those edges perhaps drilling the outer panel and welding through the hole might be a workable approach.

My thought right now is that I can't really make the donor parts worse than they are as I start. If I am successful cutting loose the parts I need from the '47 donor I could probably expect the rest of the project to be successful also.

Get those first cuts right on the donor and I can decide then if I want to start cutting a good solid cab apart.

I took a bunch of pictures of the '47 cab back and '49 5-window. I'll take more when I actually start on this project. I'm not going to cut anything on the '54 3-window until I'm sure this will work.

1955 1st GMC Suburban | 1954 GMC 250 trailer puller project | 1954 GMC 250 Hydra-Matic | 1954 Chevy 3100 . 1947 Chevy COE | and more...
It's true. I really don't do anything but browse the Internet looking for trouble...